JP2018140448A - Transport device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transport device capable of preventing a work having a conical trapezoidal shape from being transported in a posture other than a desired posture such as inversion. SOLUTION: In order to transfer a cone 9 machined by a processing device 6 to a next process by a belt conveyor 8, a transport device 7 has a first area P1 on the processing device 6 side and a second area on the belt conveyor 8 side. Convey the cone 9 to P2. The transport device 7 moves the restraint jig 20 for holding the tapered roller 9 with the outer periphery of the tapered roller 9 facing down, and the restraint jig 20 from the first region P1 to the second region P2. It is provided with an actuator 40 for making the actuator 40. A slit is formed in the bottom of the restraining jig 20 on which the tapered roller 9 is placed so that a part of the outer circumference of the tapered roller 9 is fitted. [Selection diagram] Fig. 1

Description

  The present invention relates to an apparatus for conveying a truncated cone-shaped workpiece.

  For example, a tapered roller used as a rolling element of a tapered roller bearing is formed into a predetermined conical trapezoid shape in the manufacturing process, and thereafter, rolls 91 and 92 arranged in a vertical direction and a support as shown in FIG. Polishing, grinding, lapping, or the like is performed while being supported by the member 93. The tapered roller 99 subjected to this processing is pushed from the side (from right to left in FIG. 7), rolls the chute 94 from the first region P1, and is carried to the second region P2 on the belt conveyor 95. An apparatus for conveying the tapered roller 99 using the chute 94 as described above is disclosed in Patent Document 1, for example.

JP-A-2-269538

  FIG. 8 is an explanatory diagram showing a state in which the tapered rollers 99 are conveyed from the first region P1 through the chute 94 to the second region P2. The tapered roller 99 has a circumferential length difference between the small diameter end portion 97 and the large diameter end portion 98. For this reason, when the tapered roller 99 rolls on the chute 94, the direction may change in the middle due to the difference in the circumferential length and reach the second region P2. In particular, since the width of the chute 94 is set larger than the axial dimension of the tapered roller 99 in order to correspond to the tapered rollers 99 of various sizes, the tapered roller 99 has a posture in the middle of rolling the chute 94. It is likely to change.

  In the next step, for example, for convenience of processing automation, the belt conveyor 95 is set so that the small diameter end 97 side of the tapered roller 99 is conveyed at the head, but the tapered roller 99 is set in the second region P2. Is reversed by the belt conveyor 95, and the large diameter end 98 side is transported. In this case, it is necessary to stop the work of the next process and, for example, the operator needs to reverse the direction of the tapered roller 99, so that the production efficiency is lowered. Such a problem due to inversion occurs not only in the tapered roller 99 of the bearing but also in a workpiece having a truncated cone shape.

  In view of the above, an object of the present invention is to provide a transport device that can prevent a work having a truncated cone shape from being transported in a posture other than a desired posture such as reversing.

  The transfer device according to the present invention is configured to transfer the conical trapezoidal workpiece processed by the processing device from the first region on the processing device side to the second region on the transfer device side in order to transfer the workpiece to the next process by the transfer device. A restraining jig that holds a part of the outer periphery of the work in a state where the work is placed, and the restraining jig is moved from the first area to the second area. And a slit that fits a part of the outer periphery of the workpiece. The slit is formed at the bottom of the restraining jig on which the workpiece is placed.

  According to this transport device, the restraining jig can restrain the posture of the workpiece by fitting a part of the outer periphery of the truncated cone-shaped workpiece into the slit formed at the bottom of the restraining jig. When the actuator moves the restraining jig in this state, it is possible to prevent the work in the first region from reaching the second region in a posture other than a desired posture such as reversing.

  In addition, the transfer device has a conical trapezoidal shape with one end of the small-diameter end and the large-diameter end being the leading side and the other end being the rear side, and the workpiece is oriented in one direction. It is preferable to be constituted by a belt conveyor to be transferred. In this case, the work can be transferred to the next process by placing it on the belt conveyor.

  Moreover, when the said transfer apparatus is comprised by the belt conveyor, the conveying apparatus can further change the attitude | position of the said restraining jig into the 1st attitude | position and the 2nd attitude | position which lowered | hanged the said bottom part rather than the said 1st attitude | position. A support member that supports the contact member, and the contact member that changes the restraint jig from the first posture to the second posture by contacting the restraint jig that has reached the second region. Then, a part of the outer periphery of the work exposed downward from the slit is non-contact on the belt conveyor, and in the second posture, a part of the outer periphery of the work exposed downward from the slit is It is preferable to contact on the belt conveyor. According to this configuration, when the restraining jig holding the workpiece reaches the second region, the restraining jig contacts the contact member, and the restraining jig changes from the first posture to the second posture. In a 2nd attitude | position, since a part of outer periphery of the workpiece | work exposed below from a slit contacts on a belt conveyor, a workpiece | work is transferred to the following process by the belt conveyor which is driving.

  Moreover, when the said transfer apparatus is comprised with the belt conveyor, in the said conveying apparatus, the said workpiece | work mounted on the said bottom part moves to the said one direction side by the said one direction side of the said restraining jig, and the said An opening for exiting the restraining jig is formed, and it is preferable that the one direction side of the slit is also opened. According to this configuration, when a part of the outer periphery of the work exposed from the slit of the restraining jig comes into contact with the driving belt conveyor, the work is removed from the opening on one side of the restraining jig. It goes out and is transferred as it is by a belt conveyor.

  Further, in the case where such a restraining jig is provided, the belt conveyor is configured to transfer the workpiece in one direction with the small-diameter end portion of the workpiece as the leading side and the large-diameter end portion as the back side. It is preferable that the width dimension of the slit is constant. While the width dimension of the slit is constant, the workpiece has a truncated cone shape, and therefore, the end portion having a smaller diameter protrudes downward from the slit larger than the end portion having a larger diameter. For this reason, the small diameter end portion side of the workpiece comes into contact with the belt conveyor, and the workpiece is started to be pulled out from the restraining jig by the belt conveyor with the small diameter end portion as the head. Therefore, even when the workpiece is transferred from the restraining jig to the belt conveyor, it is possible to prevent the workpiece from being reversed and proceeding to the next process in a posture other than the desired posture.

  According to the transfer device of the present invention, the restraining jig can restrain the posture of the work by fitting a part of the outer periphery of the truncated cone-shaped work into the slit formed at the bottom of the restraining jig. By moving the restraining jig in this state, it is possible to prevent the work in the first region from reaching the second region in a posture other than a desired posture such as reversing.

It is a perspective view which shows a part of one Embodiment of the conveying apparatus of this invention. It is a perspective view of a conveying apparatus. It is a top view of a restraining jig. It is the figure which looked at the restraining jig | tool in the state holding the tapered roller from the front. It is explanatory drawing which looked at the conveying apparatus from the back side. It is explanatory drawing which looked at the conveying apparatus from the back side. It is a perspective view which shows the conventional conveying apparatus. It is explanatory drawing which shows a mode that a tapered roller is conveyed from a 1st area | region to a 2nd area | region through a chute | shoot.

[Outline of transfer device]
FIG. 1 is a perspective view showing an embodiment of a transport apparatus according to the present invention. The conveying device of the present invention is a device for conveying a tapered trapezoidal workpiece from the first region P1 to the second region P2, and the workpiece of this embodiment is a tapered roller used as a rolling element of a tapered roller bearing. Nine. 1 conveys the tapered roller 9 processed by the processing device 6 from the first region P1 on the processing device 6 side to the belt conveyor 8 in order to transfer the tapered roller 9 to the next process by the belt conveyor (transfer device) 8. It is an apparatus for transporting (transferring) the tapered rollers 9 to the second region P2 on the side. The transport device 7 and the belt conveyor (transfer device) 8 constitute a transport system.

  The processing device 6 includes a pair of upper and lower rolls 11 and 12. The tapered roller 9 is sandwiched between the rolls 11 and 12 at the processing position P 0, the tapered roller 9 is rotated, and the tapered roller 9 is rotated by a grindstone (not shown). To process (grinding, polishing, or lapping). The tapered roller 9 that has finished this processing is pushed out of the processing position P0 by a mechanism (not shown) to the first region P1 where the restraining jig 20 (described later) is waiting, and is held by the restraining jig 20. . Then, as shown in FIG. 2, the restraining jig 20 moves to the second region P <b> 2, and the tapered rollers 9 held by the restraining jig 20 are placed on the transport belt 8 a of the belt conveyor 8. The belt conveyor 8 transfers the tapered rollers 9 to the next process.

  The belt conveyor 8 transports the tapered rollers 9 in one direction with one end of the tapered end portion 51 and the large diameter end portion 52 as the leading side and the other end as the rear side. However, in the present embodiment, the tapered roller 9 is transferred in one direction with the small-diameter end portion 51 as the leading side and the large-diameter end portion 52 as the rear side. In addition, although the transfer apparatus of this embodiment is comprised by the belt conveyor 8, another structure may be sufficient. By using the belt conveyor 8 as the transfer device, the tapered rollers 9 can be transferred to the next process by placing them on the conveyor belt 8a of the belt conveyor 8.

  From the state in which the tapered roller 9 is processed at the processing position P0 until it is transferred by the belt conveyor 8, the tapered roller 9 faces in the same direction, and the axial direction of the tapered roller 9 is defined as the front-rear direction. . In this embodiment, the small diameter end portion 51 of the tapered roller 9 is the front side, and the large diameter end portion 52 is the rear side. And the direction which goes to the 2nd area | region P2 side from the 1st area | region P1 side is a direction orthogonal to the front-back direction, This direction is defined as the left-right direction. The direction (the one direction) in which the belt conveyor 8 transports the tapered rollers 9 is the forward direction.

[Specific Configuration of the Conveying Device 7]
The conveying device 7 receives and holds the tapered roller 9 pushed out from the processing position P0 to the first region P1, and an actuator that moves the restricting jig 20 from the first region P1 to the second region P2. 40. The transport device 7 further includes a support member 30 that supports the restraining jig 20 so that the posture can be changed, and a contact member 31 (see FIG. 1) that can contact the restraining jig 20. Hereinafter, the structure of each part of the conveying apparatus 7 will be described.

  FIG. 3 is a plan view of the restraining jig 20. FIG. 4 is a view of the restraining jig 20 in a state where the tapered rollers 9 are held as viewed from the front. The restraining jig 20 includes a bottom portion 21 constituting a bottom wall, a side wall portion 22 provided on the left side portion of the bottom portion 21, and a rear wall portion 23 provided on a rear portion of the bottom portion 21. A slit 24 is formed in the bottom portion 21 so as to extend in the front-rear direction, and a part of the outer periphery 50 of the tapered roller 9 is fitted into the slit 24. The slit 24 is formed by a notch portion formed through the bottom 21 from the top to the bottom, and is longer than the axial dimension of the tapered roller 9 and smaller than the minimum diameter D of the tapered roller 9. W (W <D). The width dimension W of the slit 24 is constant along the front-rear direction, and the slit ends 24a and 24b are parallel. The slit ends 24 a and 24 b are chamfered to protect the tapered roller 9. When a part of the outer periphery 50 of the tapered roller 9 is fitted into the slit 24 (see FIG. 4), the restraining jig 20 is placed in a state where the tapered roller 9 is placed with a part of the outer periphery 50 of the tapered roller 9 facing down. By holding, the posture of the tapered roller 9 can be restrained. Further, in a state where the tapered roller 9 is fitted in the slit 24 and is held by the restraining jig 20, a part of the outer periphery 50 is in a state of protruding downward from the slit 24 (bottom portion 21).

  A wall portion is not provided on the right side of the restraining jig 20. That is, the restraining jig 20 has an opening 25 on the right side. The opening 25 serves as an entrance when the tapered roller 9 moves from the machining position P0 (see FIG. 1) to the restraining jig 20 waiting in the first region P1. Further, no wall portion is provided on the front side of the restraining jig 20. That is, the restraining jig 20 has the opening 26 on the front side. The opening 26 serves as an outlet when the tapered roller 9 held by the restraining jig 20 in the second region P <b> 2 moves onto the belt conveyor 8. As described above, the opening 26 is formed on the front side of the restraining jig 20 (one direction side in which the belt conveyor 8 is transferred), and the tapered roller 9 mounted on the bottom portion 21 is disposed on the front side from the opening 26. It becomes possible to get out of the restraining jig 20 by moving to (one direction side). And the front side (the said one direction side) of the slit 24 is also opened. The thrust for moving the tapered roller 9 forward is due to a part of the tapered roller 9 exposed from the slit 24 coming into contact with the belt conveyor 8.

  A state where the bottom 21 is substantially horizontal (slightly upwardly horizontal) is referred to as a first posture of the restraining jig 20. In contrast, as will be described later, a posture in which the bottom 21 is lowered from the first posture is referred to as a second posture. 5 and 6 are explanatory views of the transport device 7 as seen from the rear side. FIG. 5 shows a state where the restraining jig 20 is in the first posture, and FIG. 6 shows a state where the restraining jig 20 is in the second posture. In the first posture (see FIG. 5), a part of the outer periphery 50 of the tapered roller 9 exposed downward from the slit 24 is not in contact with the transport belt 8 a of the belt conveyor 8. On the other hand, in the second posture (see FIG. 6), a part of the outer periphery 50 of the tapered roller 9 exposed downward from the slit 24 contacts the transport belt 8a of the belt conveyor 8.

  Of the restraining jig 20, the bottom portion 21, the side wall portion 22, and the rear wall portion 23 constitute a jig main body 28 that holds the tapered roller 9 in a accommodated state. The restraining jig 20 has a swing member 27 on the left side of the jig main body 28. The jig body 28 and the swing member 27 are integrated.

  1 and 2, the actuator 40 is a linear motion actuator, and a main body 41 fixed to the fixed frame 15 of the transport device 7 and a movable part (moving linearly with respect to the main body 41). Movable rod) 42. The moving direction of the movable part 42 is the left-right direction.

  The support member 30 includes a bracket body 33 attached to the movable portion 42, a support arm 34 extending from the bracket body 33 in the right direction (on the jig body 28 side), and a fixed portion fixed to the bracket body 33. And a block 35. The swing member 27 of the restraining jig 20 is supported by the support arm 34 by the shaft 36, and the restraining jig 20 can swing around the center line 36 a of the shaft 36.

  In FIG. 5, a compression coil spring (elastic member) 37 is attached to the fixed block 35, and the spring 37 is in a state where the swing member 27 is pushed. The restraining jig 20 is maintained in the posture shown in FIG. 5 (the first posture) by the elastic force of the spring 37. Note that the position of the restraining jig 20 is regulated by the support member 30 so that the bottom portion 21 does not rise from the first posture due to the elastic force. On the contrary, against the spring 37, the restraining jig 20 is allowed to change from the first posture to the second posture shown in FIG. 6 (see FIG. 6). As described above, the support member 30 is attached to the movable portion 42 of the actuator 40 and supports the restraining jig 20 so that the posture can be changed between the first posture (FIG. 5) and the second posture (FIG. 6). doing.

  The contact member 31 is attached to the fixed frame 15 (see FIG. 1) side of the transport device 7. FIG. 5 shows a state immediately before the restraining jig 20 reaches the second region P2, and FIG. 6 shows a state where the restraining jig 20 reaches the second region P2. Immediately before the restraining jig 20 reaches the second region P2 (see FIG. 5), the swing member 27 of the restraining jig 20 does not yet contact the contact member 31, but when the restraining jig 20 reaches the second region P2. (See FIG. 6) The swing member 27 contacts the contact member 31. As a result, the contact member 31 in the fixed state pushes the swing member 27 toward the fixed block 35, and swings the restraining jig 20 around the center line 36 a of the shaft 36 against the spring 37.

  The fixed block 35 is provided with a stopper 38. The stopper 38 comes into contact with the swinging restraining jig 20 (the swinging member 27) and restricts the swinging. That is, when the restraining jig 20 that has reached the second region P2 comes into contact with the contact member 31 and swings for a predetermined stroke, the restraining jig 20 comes into contact with the stopper 38 to limit the swinging. The posture of the restraining jig 20 in the restricted state is the second posture. As described above, the contact member 31 can change the restraining jig 20 from the first posture to the second posture by contacting the restraining jig 20 that has reached the second region P2. In the second position (see FIG. 6), the restraining jig 20 (the jig body 28) is not brought into contact with the belt conveyor 8, but a part of the outer periphery 50 of the tapered roller 9 exposed from the bottom 21 of the restraining jig 20 is It contacts the conveyor belt 8a of the belt conveyor 8.

[Operation of Conveying Device 7]
The operation until the tapered roller 9 is conveyed from the first region P1 to the second region P2 by the conveying device 7 configured as described above and further the tapered roller 9 is transferred by the belt conveyor 8 for the next process will be described. To do.

  In FIG. 1, when the tapered roller 9 that has been processed is pushed from the processing position P0, the tapered roller 9 is accommodated in the jig body 28 of the restraining jig 20 that is waiting in the first region P1. As shown in FIG. 4, the restraining jig 20 restrains the posture of the tapered roller 9 by fitting a part of the outer periphery 50 of the tapered roller 9 into the slit 24 formed in the bottom 21 of the restraining jig 20. . In this state, the actuator 40 operates (see FIG. 2) to move the restraining jig 20, so that the jig body 28 reaches the second region P2. From the above, it is possible to prevent the tapered roller 9 in the first region P1 from reaching the second region P2 in a posture other than a desired posture such as inversion.

  When the jig body 28 reaches the second region P2, as shown in FIGS. 5 to 6, the swinging member 27 of the restraining jig 20 contacts the contact member 31, and the restraining jig 20 is centered on the shaft 36. It swings around the line 36a. The restraining jig 20 is in the first posture until the jig body 28 reaches the second region P2 (see FIG. 5). The restraining jig 20 swinging in the second region P2 comes into contact with the stopper 38 (see FIG. 6), and swinging is restricted, and the restraining jig 20 assumes the second posture. In the first posture (see FIG. 5), the tapered roller 9 held by the restraining jig 20 and exposed from the slit 24 is transported by the belt conveyor 8 even in the vicinity of the second region P2 (the immediately preceding region). It does not contact the belt 8a. When the restraining jig 20 is in the second posture (see FIG. 6), the tapered rollers 9 exposed from the slits 24 come into contact with the transport belt 8a of the belt conveyor 8.

  As described above, when the restraining jig 20 holding the tapered roller 9 reaches the second region P2, the restraining jig 20 contacts the contact member 31, and the restraining jig 20 changes from the first posture to the second posture (FIG. 6). In the second posture, a part of the outer periphery 50 of the tapered roller 9 exposed downward from the slit 24 comes into contact with the belt conveyor 8 (conveying belt 8a), so that the tapered roller 9 is moved to the next position by the driven belt conveyor 8. It is transferred to the process. Particularly in the present embodiment, as described above (see FIG. 3), the tapered roller 9 placed on the bottom portion 21 is moved to the front side of the restraining jig 20 to move it out of the restraining jig 20. An opening 26 is formed, and the front side of the slit 24 is also opened. For this reason, when a part of the outer periphery 50 of the tapered roller 9 exposed from the slit 24 comes into contact with the conveying belt 8a of the belt conveyor 8 to be driven, the tapered roller 9 is restrained from the opening 26 on the front side of the restraining jig 20. It goes out of the jig 20 and is transferred by the belt conveyor 8 as it is.

  Furthermore, in the restraining jig 20 of the present embodiment, the width dimension W of the slit 24 is constant, whereas the outer peripheral surface shape of the tapered roller 9 is a truncated cone shape (tapered shape). As shown, the end 51 side of the smaller diameter protrudes downward from the slit 24 more than the end 52 side of the larger diameter of the tapered roller 9. For this reason, when the small diameter end 51 side comes into contact with the conveyance belt 8a of the belt conveyor 8, the tapered roller 9 starts to be pulled out from the restraining jig 20 by the conveyance belt with the small diameter end 51 as the head. . As a result, even when the tapered roller 9 is transferred from the restraining jig 20 to the belt conveyor 8, it is possible to prevent the tapered roller 9 from inverting and proceeding to the next process in a posture other than the desired posture. It becomes.

  As described above, the direction of the tapered roller 9 does not change until the tapered roller 9 is transported from the first region P1 to the second region P2, and further, until the belt conveyor 8 transfers the tapered roller 9 to the next process, It is conveyed to the next process in a predetermined direction. For this reason, it becomes possible to prevent the production line from being temporarily stopped due to the reversal of the tapered roller 99 as in the prior art (see FIG. 8). Further, according to the transport device 7 of the present embodiment, even if the model number (shape) of the tapered roller 9 to be transported is different, the posture of the tapered roller 9 can be restrained by the slit 24 of the restraining jig 20. Yes, it can be handled. Moreover, it can replace with the structure by the chute | shoot 94 of the past (refer FIG. 8), and the conveying apparatus 7 of this embodiment can be installed in the existing production equipment.

The embodiments disclosed above are illustrative in all respects and not restrictive. That is, the conveying apparatus of the present invention is not limited to the illustrated form, and may be in another form within the scope of the present invention. In the above-described embodiment, the workpiece to be transported has been described as the tapered roller 9, but other workpieces may be used, and the transport device of the present invention can be applied to a workpiece whose outer peripheral shape is a truncated cone shape. . The processing device 6 may be other than a device that performs grinding, polishing, or lapping.
In addition, although the conveying apparatus 7 of the said embodiment demonstrated the case where a truncated cone-shaped workpiece | work (conical roller) was conveyed, this conveying apparatus 7 is cylindrical shaped workpiece | work (for example, the cylindrical roller which a cylindrical roller bearing has). It is also possible to use it when transporting. In this case, it is preferable to change the shape of the slit 24 (see FIG. 3), and for the cylindrical workpiece, the width dimension W of the slit 24 may be gradually enlarged toward the front.

6: Processing device 7: Conveying device 8: Belt conveyor (transfer device)
9: Tapered roller (workpiece) 20: Restraint jig 21: Bottom 24: Slit 25: Opening 26: Opening 30: Support member 31: Contact member 40: Actuator 50: Outer periphery 51: End of small diameter 52: End of large diameter Part P1: First region P2: Second region W: Width dimension

Claims (5)

An apparatus for transporting the workpiece from the first region on the processing device side to the second region on the transfer device side in order to transfer the truncated cone-shaped workpiece processed by the processing device to the next process by the transfer device. There,
A restraining jig for holding the work with the part of the outer periphery of the work facing down,
An actuator for moving the restraining jig from the first region to the second region,
The conveying apparatus by which the slit which a part of outer periphery of the said workpiece | work fits is formed in the bottom part of the said restraining jig which mounts the said workpiece | work.   The transfer device transfers the work in one direction with one end of the small-diameter end and the large-diameter end of the work having a truncated cone shape as the leading side and the other end as the back side. The conveying apparatus according to claim 1, which is configured by a belt conveyor. A support member that supports the restraining jig in a first posture and a second posture in which the bottom portion is lowered from the first posture, so that the posture can be changed;
A contact member that changes the restraining jig from the first attitude to the second attitude by contacting the restraining jig that has reached the second region;
With
In the first posture, a part of the outer periphery of the workpiece exposed downward from the slit is non-contact on the belt conveyor,
The conveying device according to claim 2, wherein in the second posture, a part of the outer periphery of the workpiece exposed downward from the slit contacts the belt conveyor. On the one-direction side of the restraining jig, an opening is formed so that the work placed on the bottom moves out of the restraining jig by moving to the one-direction side.
The transport apparatus according to claim 2, wherein the one direction side of the slit is also open. The belt conveyor is configured to transfer the workpiece in one direction with a small-diameter end of the workpiece as a front side and a large-diameter end as a back side,
The conveying apparatus according to claim 4, wherein a width dimension of the slit is constant.

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